| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 169 | 
                                    
                                    18.5%
                                 | |
| 2015 | 152 | 
                                    
                                    16.6%
                                 | |
| 2016 | 165 | 
                                    
                                    18.1%
                                 | |
| 2017 | 151 | 
                                    
                                    16.5%
                                 | |
| 2018 | 142 | 
                                    
                                    15.6%
                                 | |
| 2019 | 134 | 
                                    
                                    14.7%
                                 | |
| Sysmiss | 0 |